compositions



COMPOSlTlONS, COAllNG R PLASTIC UNITED STATES Cross Reference PATENT OFFICE.

METHOD OF AND COMPOSlTlON FOR PRODUCING IMlTATlON STONE OR WOOD, 81c.

SPECIFICATION forming part of Letters Patent No. 607,095, dated July 12, 1898.

Application filed July 26, 1897. Serial No- 645,934. (Ho specimens.) Patented in Sweden September 1 To all whom itmuy concern:

Be it known that I, FRAXsRICHABD ALEX-- ANDER SUNDELL, sculptor, a subject of the King of Sweden, and a resident of Stockholm,

in the Kingdom of Sweden and Norway,have

invented certain new and useful Improvements in Methods of Producing Imitations of Different Kinds of Stone or Wood and the Like and Composition of Matter for the Same,

(0 (for which I have obtained apatentin Sweden, No. 4,965, hearing date September 13, 1893,) of which the following is h specification.

This invention relates to a method of and composition for imitating in a very striking :5 manner different kinds of wood and mineral materials-for instance, of thelat-ter, marble, onyx, porphyry, the. The imitations maybe produced in the shape of plane or curved plates, moldings, ornaments, &c. It is apparent, however, that the articles produced need not be made to imitate natural objects, since they may be given a surface in one color or provided with a fancy pattern or, briefly, with any desired design.

mentor )laster-of; lflIfiS, orboth of these mai'erlais, 1i desireid, with the addiiion of from twelve and one-half to ten per cent. of albolith, are mixed with from twelve and one-half to six and one-quarter per cent. of slaked lime (the parts being taken by weight, wHer, We "lutinous substance, preferab y lo ne ue, in so u on, one or more colornwmatiers heiugadd ed to the mixture as a whole 3 5 or to different portions thereof. \Vater is to be taken in sufficient quantity to give to the whole the consistency of gruel or pulp. By the term cement I refer to those substances which when mixed with water harden 40 so as to form a stone-like mass, having a greater hardness and tenacity than common mortar and usually terme'l hydraulic cement. The albolith used is made from mag- (a na ive car )onate of IllfV'DBSllllll nesite,

\v no 1 is ground and siitcd and then mixed with a certain quantity of amor hous silicic acid. The coloring-matter Besf suited for the u.-

purpose are ground mineral colors, though othercoloring'mattenmay lie employed. The

only colors to be 1156(1,110WGV8I, are those which will not fade. The various ingredients may be mixed in all at once or successively.

The invention is carried out as follows: (.e-

,1893, No. 4,965 it Of the mass thus prepared a quantity of one or several colors is spread out over an even horizontal surface or poured into a mold, this operation being carried out without any greasing or oiling whatever of thesurface of the mold, andneither need hot nor cold water be used for the removing of the product from the mold. If it is desired to imitate a mineral, for instance, or some kind of wood, suitably -eolored portions of the mass are chosen and spread out over the surface, suitable expedient-s-sueh as sponges, brushes, &c.--heing employed for the intermingling of the variously-colored portions, 50 as to produce the marbling, graining, &c., required. After the distribution and mixing of the colors there is sifted or sprinkled over the sur face some drv gy upnor cement, or both, it

wanted, wit l the addition of ohe-eighth or Examiner one-sixteenth part of slaked lime, whcreupon the-whole is left intact for from five to thirty minutes. The whole surface is then covered with a mass of the same composition as that first used. No eolgrring-matter need, how ever, be mixed into this mass, since it is the back side of the article which is produced in this operation. The whole is then sifted over as before. On allowing the mass to remain intact for some time (from two to twenty min utcs) the whole piece is pressed, stamped, o'r pounded with wooden mallets, for instance, for the purpose of giving increased coherence to the product. thus produced has dried partly, it can be taken up and placed to dry still further in the air, or it may be dried byany usual means. Articles produced in this manner require no grinding and in many cases no polishing, the surfaces by the mixing process and treatment above described being directly made to appear smooth and very glossy.

In order to produce plates or other objects of greater strength, the whole surface should after the second sifting operation be covered with some woven material, wire-nettingbeing best suited for the purpose, though textile materials may answer. Said woven material may be applied in one piece or'in pieces of large or small size.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

When the piece 1. The method of prod ucin; imitations of minerals and wood consisting in forming the body portion of a mixture of cement and slaked lime, miter containing a glutinous substance in solution and albolitli, spreading out; said mass, sprinkling: the surface with a dry mixture of cement and SiHiiOti lime, then covering the surface with a mass of material of the same composition as that forming the body and again sprinkling the surface with a dry mixture of cement and slaiced lime, pressing the mass, and allowing the same to dry, suhstantim 3 as described.

2. The herein-described composition imitating mineral or wood substances consisting of a mixture of cement, slulied lime, a glutinous substanceand alholith, substantially as described.

In witness \rhereofI have hereunto signed my name in the presence of two subscribing witnesses.

FRAXS RICHARD ALEXAXllEll SIXDELL.

Witn esses:

ERNST SYANQYIST, HANS B. OHLSSOX 

